tag:blogger.com,1999:blog-19281624.post3648916120415881639..comments2023-11-29T09:00:11.662+00:00Comments on Johan Andersson's Cluster and HA Blog: garbd - How to avoid network partitioning or split brain in a Galera ClusterJohan Anderssonhttp://www.blogger.com/profile/09202425156709885026noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-19281624.post-87742721406660200562012-11-08T20:30:27.324+00:002012-11-08T20:30:27.324+00:00Hi Hector,
It depends on...
There is a majority-...Hi Hector,<br /><br />It depends on...<br /><br />There is a majority-win rule.<br />Really, you should put it on a site where no Galera node runs, but that may be hard, so really on DC4, if you have one galera node already on each of DC1, DC2, DC3.<br /><br />However, many of our users and customers have one data center that they are physically close to, then that is kind of their "primary" data center, and they then put X garbds on that "primary" datacenter, so that if DC2 _and_ DC3 goes, then DC1 has the majority of nodes. The most common problem is in most cases that the network connectivity goes down between the data centers, and rarely that two DCs (in a three DC setup), breaks down due to power failure at the same time.<br /><br />I hope this helps a little bit.<br />-johan<br /><br /><br /><br />Johan Anderssonhttps://www.blogger.com/profile/09202425156709885026noreply@blogger.comtag:blogger.com,1999:blog-19281624.post-59912415640459909832012-11-08T19:44:23.000+00:002012-11-08T19:44:23.000+00:00Thanks for your great blog post, i just have a que...Thanks for your great blog post, i just have a question: Where do you install garbd? Datacenter 1, Datacenter 2 or in a 3rd Datacenter?Hectorhttps://www.blogger.com/profile/18057780454463054571noreply@blogger.com